KR100982335B1 - Apparatus for preventing a spare tire from falling down - Google Patents

Abstract

The present invention relates to a spare tire fall prevention device capable of preventing the spare tire from falling off from the vehicle even when a wire break occurs. The spare tire fall prevention device according to an embodiment of the present invention has a ring shape at one end thereof. A cam surface is formed on one surface of the lever body, a locking lever rotatable about a rotation axis of the lower end of the lever, and the rotation axis is formed therein to provide a space for the locking lever to rotate along the rotation axis. And a locking portion configured to rotate the locking lever by tilting by contacting the cam surface of the locking lever as the housing is raised in an upright state of the locking lever, wherein the locking portion is completed when the spare tire is mounted. The locking lever is kept in an inclined state.

Spare tire, anti-fall, wire breakage

Description

Apparatus for preventing a spare tire from falling down}

The present invention relates to a spare tire fall prevention device, and more particularly, to a spare tire fall prevention device that can prevent the spare tire from falling off from the vehicle even if a wire break occurs.

Spare tire generally refers to a tire that is preliminarily mounted on a vehicle in preparation for tire puncture or tire breakage of an automobile. For example, in a vehicle having a separate trunk such as a passenger car, spare tires are stored on the bottom surface of the trunk, and some vehicles that do not have a separate trunk have a spare tire fixed to the lower surface of the vehicle body. It is common.

When fixing spare tires to the lower surface of a typical vehicle such as a truck or SUV, a chain or wire with a separate power train is connected to the spare tire to move the power train by hand or by a separate mechanical device to move the chain or wire. Remove or fix the spare tire while winding or unwinding.

When the spare tire is fixed as described above, the spare tire may be exposed to the outside of the vehicle to be in contact with the road structure. The chain or wire that secures the spare tire can be subjected to contact loads or contact shocks by such contact or to damage and permanent deformation by vibration.

If the chain or wire is cut while driving the vehicle due to damage to the chain or wire, the spare tire may fall on the road surface under the vehicle, which may obstruct the driving of the vehicle or cause a safety accident to other vehicles or pedestrians.

Therefore, there is a need for an apparatus that does not allow the spare tire to be detached from the vehicle even when there is a breakage of the chain or wire that fixes the spare tire.

One embodiment of the present invention is to provide a device for preventing the spare tire attached to the vehicle from falling off from the vehicle.

Along with this, an object of the present invention is to provide a device capable of reliably providing a fall prevention function of a spare tire even if there is corrosion or permanent deformation in a portion for fixing the spare tire.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

Spare tire fall prevention device according to an embodiment of the present invention in order to achieve the above object is one end of the ring shape, the cam body is formed on one surface of the lever body, lockable to rotate around the axis of rotation of the lower lever Locking lever; A housing which forms the rotation shaft therein and provides a space in which the locking lever can rotate along the rotation shaft; And a locking part that contacts the cam surface of the locking lever and tilts it by tilting the locking lever in accordance with the rising of the housing while the locking lever is vertically placed, and the locking part is completed when the spare tire is mounted. Keep the lever tilted.

According to another aspect of the present invention, there is provided a spare tier falling prevention device including: a locking lever formed at one end thereof in a ring shape and the other end formed to be rotatable about a rotating shaft; A housing which forms the rotation shaft therein and provides a space in which the locking lever can rotate along the rotation shaft; And a double elastic part formed below the housing and tilting by rotating the locking lever in a state in which the locking lever is standing vertically, wherein the double elastic part maintains the locking lever in an inclined state when the spare tire is installed. Let's do it.

According to an embodiment of the present invention, the spare tire attached to the vehicle can be prevented from falling off from the vehicle. In addition, the spare tire can be prevented from being separated even when the wire for fixing the spare tire is broken. In addition, even if there is corrosion or permanent deformation at the part fixing the spare tire, the locking lever may be kept in the locking mode to stably prevent an accident of falling of the spare tire.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Specific details of other embodiments are included in the detailed description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of the spare tire fall prevention apparatus according to an embodiment of the present invention, Figure 2 shows a perspective view of the spare tire fall prevention apparatus according to an embodiment of the present invention.

Referring to Figure 1, spare tire fall prevention device according to an embodiment of the present invention device fixing portion 210, locking lever holder 200, tire bracket 180, wire guide 130, housing 110 , The locking lever 100, the elastic straightening part 120, the rotation shaft pin 165, the fixed shaft 175, the locking part 300, the washer 140, the elastic member 160, and the wire stopper 170. can do.

The device fixing unit 210 may be combined with the vehicle. Device fixing unit 210 may be coupled to the vehicle by a known coupling means through the provided hole.

The locking lever holder 200 provides a space for accommodating the housing 110. The locking lever holder 200 may be integrally formed with the device fixing part 210. The locking lever holder 200 may accommodate an upper portion of the housing 110 and provide a space in which the locking lever 100 may operate. Accordingly, the locking lever holder 200 may include a flange hole 225 having a predetermined diameter so that the housing 110 may be accommodated in the locking lever holder 200 through the lower surface.

The locking lever holder 200 may include a flange 220 to which the ring 105 of the locking lever can be caught. When the housing 110 falls vertically by the load of the spare tire due to wire breakage, the ring 105 of the locking lever is separated from the spare tire by being caught by the flange 220 from which the ring 105 of the locking lever protrudes. Can be prevented.

The tire bracket 180 horizontally mounts the spare tire to the rim portion. By fitting the predetermined groove portion of the spare tire by the horn 185 of the tire bracket 180, the tire bracket 180 can prevent the spare tire from being miserable on a flat surface.

The tire bracket 180 may pass through the upper body 113 of the housing and be seated on the lower body 115. The tire bracket 180 may be formed to be coupled to the lower body 115 of the housing with a predetermined error so that the tire bracket 180 may be seated and fixed to the jaw of the lower body 115 of the housing.

The wire guide 130 serves to guide the wire 150. The wire guide 130 is inserted into the groove of the housing upper body 113 to guide the wire 150 in the housing 110 so as not to be broken by friction. The wire 150 mentioned in the embodiment of the present invention has a predetermined tensile force that can withstand the load of the spare tire, and can be wound or unwound by manual work or a separate mechanical device to fix the spare tire to the vehicle. have. The wire 150 may be a metal wire or chain, and generally include a known wire rope or the like capable of withstanding a predetermined tensile force.

The housing 110 accommodates the locking lever 100 therein. In the housing 110, the locking lever 100 may rotate about a predetermined rotation shaft 250. The center of the housing 110 provides a space through which the wire 100 can pass, and together with a space in which the locking lever 100 can operate. The housing 110 may have a predetermined side surface removed such that the locking lever 100 may protrude out of the housing by the rotation of the locking lever 100.

The housing 110 may accommodate the locking lever 100, the elastic straightening part 120, the rotation shaft pin 165, the fixing shaft 175, the fixing pin 310, the moving pin 320, and the lock spring 330. And the configuration in which the housing 110 and the other elements 100, 120, 160, 170, 310, 320, 330 are combined may be referred to as the housing assembly 350.

One end of the locking lever 100 may be formed of a ring 105, and a predetermined hole 107 may be formed so that the other end thereof may be rotated about a rotation axis. The hook 105 of the locking lever is bent such as a hook, sickle, hook and the like so that the housing 110 and the locking lever 100 can be caught by the flange 220 of the locking lever holder 200 when the housing 110 and the locking lever 100 are dropped by a wire breakage or the like. It can be in form. The locking lever 100 has a predetermined hole 107 formed at the other end thereof, and a rotating shaft pin 165 is inserted through the predetermined hole 107 to lock the locking lever with the rotating shaft pin 165 as a central axis. 100 may be rotated.

Locking lever 100 has a lever body 103 having an end of each end may be made of a rod of a predetermined length. The central portion of the lever body 103 may be an empty space to provide a passage through which the wire can pass. For example, the lever body 103 is a hollow groove in the longitudinal direction is formed, it may be made of a combination of plates formed at a predetermined interval between the ring 105. In addition, a cam surface 109 may be formed on one surface of the lever body. The cam surface 109 of the lever body provides a surface on which the locking lever 100 is rotated about the rotation shaft 250 by contact with the locking portion 300 on the contact surface. Therefore, the cam surface 109 may be manufactured in various forms in consideration of a path in contact with the locking part 300. On the other hand, the bottom surface of the locking lever 100 may be formed horizontally to receive a force by the washer 140.

The elastic correction part 120 may rotate the locking lever 100 by providing an elastic force to the locking lever 100. When there is no external force provided to the locking lever 100, the elastic correction part 120 maintains the locking lever 100 in an inclined state in a rotated state, and when the locking lever is vertically erected by the external force. It provides an elastic force to the locking lever 100.

As an example of the elastic straightening unit 120 may be a torsion spring (Torsion spring). The torsion spring has a 'c' shape, and both ends may be formed with a coil wound in a circular shape to provide a torsional resistance to rotation.

The rotating shaft pin 165 is fixed to the housing 110 through the circular coil of the elastic straightening part 120 and the hole 107 of the locking lever. The rotating shaft pin 165 provides a rotating shaft to the locking lever 100 so that the locking lever 100 rotates about the rotating shaft pin 165.

The fixed shaft 175 is installed in parallel with the rotation shaft pin 165 in the housing 110, and the elastic correction portion 120 rotates with the rotation shaft pin 165 while a part of the 'c' of the elastic correction portion 120 abuts. It is to prevent the rotation about the center.

The locking unit 300 may operate to maintain the locking lever 100 in the locking mode in the operation of the anti-drop tire anti-drop device according to the embodiment of the present invention. Here, the locking mode refers to a state in which the locking lever is inclined in a predetermined direction on a vertical line, not in a vertical state. The 'locking mode' defined in one embodiment of the present invention will be described in detail later. The locking unit 300 may include a fixing pin 310, a moving pin 320, and a lock spring 330.

The fixing pin 310 is mounted on the housing 110 and fixes one end of the lock spring 330.

The moving pin 320 is positioned below the fixing pin 310 to horizontally penetrate both opposite sides of the housing 110. The moving pin 320 may move along a predetermined path formed at both side surfaces of the housing. The moving pin 320 has a relatively longer length than the fixing pin 310, and both ends of the moving pin 320 are locked lever holders when the locking lever holder 200 descends or the housing 110 rises. It may be caught in the flange hole 225 of the 200. Therefore, the housing 110 is raised in a state where the moving pin 320 is caught by the flange hole 225, so that the moving pin 320 can be seen to be moved to the lower side of the housing, and the moving pin 320 is moved. In contact with the cam surface 109 of the locking lever 100, the locking lever 100 can be rotated about the rotation shaft 250 to maintain the tilted state.

The lock spring 330 serves to connect the fixing pin 310 and the moving pin 320. Lock spring 330 may be composed of one or more, the lock spring 330 is connected to each end of the fixing pin 310 and the moving pin 320, according to the falling of the moving pin 320 lock spring ( The length of 330 can be increased.

The elastic member 160 may be positioned below the housing 110 to be compressed due to the winding of the wire 150. For example, the elastic member 160 may be a compression coil spring, or may be made of various hollow elastic bodies.

The washer 140 is positioned on the elastic member 160 to transfer the compressive force of the elastic member 160 to the locking lever 100. The washer 140 is for uniformly transmitting the compressive force of the elastic member 160 to the locking lever 100, and may be omitted if the compressive force can be transmitted only to the elastic member.

The wire stopper 170 is attached to the end of the wire 150, the height is adjusted by the winding and unwinding of the wire, and supports the elastic member 160. The wire stopper 170 serves to compress the elastic member 160 by winding the wire 150, and is integrally attached to the wire 150 to support the tensile force supported by the wire 150. Therefore, when the wire stopper 170 is damaged, the housing 110, the locking lever 100, the elastic member 160, the tire bracket 180 on which the spare tire is mounted, etc. may fall together.

Referring to FIG. 2, the locking lever 100 is located in the housing 110, and the locking lever holder 200 is located in the housing 110, with the spare tire drop prevention apparatus according to the exemplary embodiment of FIG. 1 assembled. ) Wrap the upper part. The wire 150 penetrates through the center portion of the spare tire fall prevention device, and the force is transmitted to the wire stopper 170 by winding the wire 150 by the power transmission device 400 so that the housing 110 locks the lever. It may be inserted into the holder 200. The wire stopper 170 continues to wind the wire to compress the elastic member so that the length of the spare tire fall prevention device is kept in a relatively short state to be mounted on the vehicle.

On the other hand, the power transmission device for winding the wire 400 may be divided into manual or automatic as a device for winding or unwinding the wire 150. The power train 400 may align the wires to a predetermined storage box in the power train while winding or unwinding the wires.

Figure 3 shows a torsion spring as an example of the elastic straightening device in the spare tire fall prevention apparatus according to an embodiment of the present invention.

Referring to Figure 3, the torsion spring 120 is formed of a pair of coils wound in a circular shape and both ends of each coil is connected, one end is connected as shown in the 'c' shaped support portion 122 Can be formed. The other end of each coil is not connected to each other, as shown in the drawing extends in the direction in which the support portion 122 is formed, the end portion is formed a locking portion 124 is bent at 90 degrees to be fixed by walking in the groove. Support portion 122 is supported by a fixed shaft 175 coupled to the housing 110, the locking portion 124 can be fixed to the groove (not shown) formed on the outer side of the locking lever 100 have.

4A and 4B illustrate the operation of the locking mode of the spare tire drop prevention apparatus according to an embodiment of the present invention, and FIG. 4C shows the release mode of the spare tire fall prevention apparatus according to an embodiment of the present invention.

Referring to FIG. 4A, the locking mode refers to a state in which the locking lever 100 is inclined by rotating along a predetermined axis of rotation rather than standing vertically. Therefore, in the locking mode, even when the spare tire can no longer be supported due to disconnection of the wire, the spare tire can be prevented from being released by the locking mode of the locking lever 100.

Referring to FIG. 4B, the housing 110 including the locking lever 100 falls vertically due to breakage of the wire in the locking mode. However, even if the housing 110 falls, the ring 105 of the locking lever maintained in the locking mode may be caught by the flange 220 of the locking lever holder 200.

Therefore, it is possible to prevent the spare tire from falling in a situation in which the spare tire may fall due to sudden wire breakage by being kept in the locking mode. In addition, compared to a method in which the locking lever 100 is switched to the locking mode after the wire break occurs in order to detect the breakage of the wire and prevent the fall of the spare tire, even if there is a breakage of the wire in the state of being kept in the locking mode. It is relatively stable to prevent the spare tire from leaving. Because the spare tire fall prevention device is not frequently operated, but is operated only a small number of times in case of wire breakage or the like, the permanent deformation of the torsion spring 120, the locking lever ( This is because the locking lever 100 may not be able to switch to the locking mode due to a failure of the operating means for operating the 100 or the like.

Referring to FIG. 4C, the release mode is a state in which the locking lever 100 stands vertically, and the locking lever 100 is a flange of the locking lever holder 200 when the housing 110 descends vertically. Can not take 220. Therefore, when the housing 110 on which the spare tire is mounted and the tire bracket 180 fall due to breakage of the wire or the like, the locking lever 100 in the release mode may also drop together, causing detachment of the spare tire. .

On the other hand, when the housing 110 falls due to wire breakage or the like while the locking lever 100 is in the release mode, the locking lever 100 may be switched to the locking mode. As described above, it may be impossible to switch the locking lever 100 to the locking mode due to a state of inactivity for a long time or a mechanical defect, thereby failing to guarantee reliability.

Therefore, the spare tire fall prevention apparatus according to an embodiment of the present invention by maintaining the locking lever 100 in the locking mode in the state in which the device is attached to the vehicle, the locking lever 100 stable in the situation such as sudden wire break ) Can be secured. Therefore, the risk of the safety accident due to the spare tire drop can be lowered.

Figures 5a to 5c shows the operation of the spare tire fall prevention apparatus according to an embodiment of the present invention in each step. In an embodiment of the present invention, it is possible to distinguish between 'mounting' and 'mounting completion' of the spare tire. The 'mounting' of the spare tire simply means that the spare tire is simply placed on the tire bracket 180, and the 'mounting completion' of the spare tire is performed by attaching the spare tire to the tire bracket 180 and wrapping the spare tire with sufficient tension force. The state of pulling.

Referring to FIG. 5A, a state of the locking lever before mounting the spare tire on the tire bracket 180 is illustrated. Since the spare tire is not mounted, the elastic force hardly acts on the elastic member 160 positioned below the locking lever 100. The locking lever 100 maintains an inclined state on a vertical line by the elastic force of the elastic straightening part 120. Here, the inclined state refers to a state in which the locking lever 100 is rotated from a vertical line about the rotation pin 165.

In a state where no force is applied to the locking lever from the outside, the locking lever 100 is kept in an inclined state by the elastic force of the elastic correction unit 120, and in the inclined state, the elastic correction unit 120 receives almost no elastic force. Do not. In other words, in the state in which the locking lever 100 is set on the vertical line, the elastic force is received by the elastic correcting unit 120, so that the elastic force may not be in an inclined state. Therefore, before the spare tire is mounted, the locking lever 100 may be inclined by the elastic straightening part 120 as shown in FIG. 5A.

Referring to FIG. 5B, by mounting the spare tire S to the tire bracket 180, a load of the spare tire is transferred to the spare tire fall prevention apparatus. The housing assembly 350 including the housing 110 is lowered, and the elastic member 160 positioned below the housing 110 may withstand the load of the spare tire. Therefore, the elastic member 160 is reduced in length by a force corresponding to the load of the spare tire, in response to this provides an elastic force to the lower surface of the locking lever 100. Due to the washer 140 between the elastic member 160 and the locking lever 100, the washer 140 transmits an elastic force to the lower surface of the locking lever 100, the locking lever 100 is a rotating shaft by the received elastic force Rotate around and stand on vertical line.

Referring to FIG. 5C, after mounting the spare tire S to the tire bracket 180, a step of winding the wire 150 is shown. Two changes may occur while winding the wire 150. First, the upper body of the housing 110 may be inserted through the flange hole 225 of the locking lever holder 200 by winding the wire up. At this time, since the locking lever 100 is in a vertical state as shown in FIG. 5B and exists inside the housing, the upper body of the housing 110 is inserted into the flange hole 225 of the locking lever holder 200. Does not interfere with

In addition, by winding the wire 150, the elastic member 160 may be continuously compressed. Therefore, the upper body of the housing at the point where the compression of the elastic member 160 is completed can be in contact with or close to the upper portion of the locking lever holder 200.

As described above, the upper body of the housing 110 in the process of winding the wire is inserted into the interior of the locking lever holder 200, with the locking lever 100 can be switched to the operating mode in an inclined state. . In other words, the locking lever 100 is switched to the locking mode mentioned in FIG. 4A. The switching to the locking mode may be performed by moving the housing 110 and the moving pin 320 in the housing to be locked by the locking lever holder 200. The moving pin 320 having a longer length than the fixing pin 310 is caught by the edge of the flange hole 225 of the locking lever holder 200 while the housing 110 and the locking lever 100 are lifted up, thereby preventing the lift. Then, the vertical rising of the locking lever 100 is prevented while contacting the cam surface 109 of the rising locking lever. Therefore, the locking lever 100 may be switched to the locking mode while being inclined about the rotation shaft pin 165 by the moving pin 320. Detailed operation description of the above will be described later.

Figure 5d shows the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to an embodiment of the present invention.

Referring to FIG. 5D, the fall prevention device may be operated by the following mechanism by wire breakage. First, in the state in which the spare tire S is mounted as shown in FIG. 5C, the locking lever is maintained in the locking mode state. When the wire 150 is broken, the tire bracket 180 and the housing 110 to which the spare tire S is attached fall as shown in FIG. 5D. The locking lever 100 is maintained in the locking mode, so that the ring 105 of the locking lever 100 is caught by the flange 220 of the locking lever holder 200 during the fall of the bracket 180 and the housing 110. Can be. Therefore, the lock 105 of the locking lever is caught by the flange 220, and the locking lever 100 is prevented from falling, and the housing 110 and the tire bracket 180 connected to the locking lever are also prevented from falling.

Therefore, the spare tire fall prevention apparatus according to an embodiment of the present invention as described above can stably prevent the fall of the spare tire (S) due to breakage of the wire by maintaining the locking lever 100 in the locking mode. In addition, even when a sudden drop of the spare tire (S), the safety accident can be prevented because the spare tire can be prevented from falling even without adding a mechanical operation from the locking lever 100 in the locking mode.

6A and 6B illustrate a process of switching to the locking mode in the spare tire drop prevention apparatus according to an embodiment of the present invention in detail.

Referring to FIG. 6A, it is the starting point of the step of FIG. 5C at the moment when the top of the housing begins to be inserted into the flange hole of the locking lever holder. The locking lever 100 may be inserted into the flange hole 220 together with the housing 110 while being accommodated in the housing 110 in a vertically upright state.

Referring to FIG. 6B, when the upper body of the housing 110 is inserted into the locking lever holder by the winding of the wire, the locking lever 100 is switched to the locking mode in which the locking lever 100 is inclined by the moving pin 320. Able to know. As the housing 110 is raised, the locking lever 100 may be inclined while the moving pin 320 contacts the cam surface 109 of the locking lever. The inclination of the locking lever 100 is raised by the locking lever holder 200 while the locking lever 100 is raised while the moving pin 320 is prevented from being raised, and the movable pin 320 is cam surface 109 of the locking lever. By applying a contact force along the lock lever 100 may be made while rotating along the rotary shaft pin 165. Thus, the locking lever 100 can be switched to the locking mode.

7 is an exploded perspective view of the spare tire fall prevention apparatus according to another embodiment of the present invention.

Referring to FIG. 7, the spare tire drop prevention apparatus according to another embodiment of the present invention may include a device fixing part 210, a locking lever holder 200, a tire bracket 180, a housing 110, and a locking lever 100. , The elastic straightening part 120, the rotation shaft pin 165, the fixed shaft 175, the locking part 700, the washer 140, the elastic member 160, and the wire stopper 170 may be included. Device fixing unit 210, locking lever holder 200, tire bracket 180, housing 110, locking lever 100, elastic correction portion 120, rotary pin 165, fixed shaft 175, The components of the washer 140, the elastic member 160, and the wire stopper 170 have been described in detail in the above-described embodiment, and thus will be omitted.

The locking unit 700 may include a guide pipe 720, a lock button 710, and a button spring 730. The locking unit 700 rotates the locking lever 100 about the rotation shaft pin 165 by winding the wire in a state where the spare tire is mounted, thereby maintaining the inclined state to switch to the locking mode. Therefore, the locking part 700 may be operated in the process of inserting the upper body 113 of the housing 110 into the locking lever holder 200.

Guide pipe 720 provides a passage for the wire 150, and serves to block the rise of the lock button 710. The diameter of the guide pipe 720 may substantially match the diameter of the outer protrusion 715 of the lock button 710.

The lock button 710 serves to tilt the locking lever 100 in contact with the cam surface 109 of the locking lever 100. The lock button 710 rotates the locking lever 100 about the rotation pin 165 to switch to the locking mode. The upper portion of the lock button 710 is fitted to the housing upper body 113, the lower portion of the lock button 710 may have a radial or inclined surface to contact the cam surface 109 of the locking lever to tilt the locking lever. The lock button 710 includes a hollow hole through which a wire can pass. At the point at which the upper and lower portions of the lock button 710 are divided, the outer protrusion 715 may be included to prevent the lowering of the guide pipe.

The button spring 730 is fitted to the lower portion of the lock button 710 and is compressed by the rising of the locking lever 100. The button spring 730 serves to keep the lock button on top of the housing. The button spring 730 may serve as a buffer by providing an elastic force against the rising of the housing 110.

8a to 8c show each step of the operation of the spare tire fall prevention apparatus according to another embodiment of the present invention.

Referring to FIG. 8A, the state of the locking lever before mounting the spare tire on the tire bracket is shown. In the state where the force does not act on the locking lever from the outside, the locking lever is inclined by the elastic force of the elastic straightening unit 120, and the elastic force almost acts on the elastic straightening unit 120 in the tilting state of the locking lever. I never do that. Therefore, before the spare tire is mounted, the locking lever may exist in a stable state in an inclined state.

Referring to FIG. 8B, the spare tire S is mounted on the tire bracket 180. The housing 110 may be lowered by the load of the spare tire, and the elastic member 160 may support it. While supporting the spare tire by the elastic member 160, an elastic force may be transmitted to the locking lever 100 positioned on the elastic member 160. When there is a washer 140 between the elastic member 160 and the locking lever 100, the elastic force may be transmitted to the locking lever 100 through the washer 140. The locking lever 100 may receive the elastic force of the elastic member and rotate about the rotation pin 160. The locking lever 100 receives an elastic force from the center, and rotates about the rotation axis to stand directly on a vertical line. In other words, the locking lever 100 may be switched to the release mode.

Referring to FIG. 8C, the mounting of the spare tire S may be completed by winding the wire 150 while the spare tire S is mounted on the tire bracket 180. Two changes may occur by winding the wire 150. First, the upper body 113 of the housing 110 is inserted into the locking lever holder 200, and secondly, the elastic member 160 under the housing may be compressed.

Due to the winding of the wire through the power train 400, the upper part of the housing 110 is inserted into the locking lever holder 200, and the housing 110 has the device fixing part 210 in which the guide pipe 720 is fixed. It may rise until it contacts.

When the upper portion of the lock button 710 contacts the guide pipe 720 fixed to the device fixing portion 2100, the rising of the lock button 710 is stopped, but the housing 110 continues to rise by the continuous winding of the wire. At this time, a force may be transmitted to the wire stopper 170 by the winding of the wire, and the elastic member 160 may be compressed, and the housing 110 may be in a state in which the lock button 710 is stopped. The lower portion of the locking button 710 and the cam surface 109 of the locking lever may be in contact with each other.The locking lever 100 also rises with the rise of the housing 110, but the cam surface 109 of the locking lever is raised. The locking lever 100 may be inclined in response to the contact force while contacting the lower portion of the lock button 710. In other words, the cam surface 109 of the locking lever is raised while contacting the lower portion of the lock button 710, The locking lever 100 may be switched to the locking mode by rotating along the rotation shaft pin.

When the housing 110 is raised by the movable distance h of the lock button 710 that is allowed in the housing upper body 113, no further lift can be made, and the locking lever 100 is locked by the lock button 710. It can be switched to the locking mode by. Therefore, after the winding of the wire is completed, the mounting of the spare tire may be completed in a state in which the locking lever is switched to and maintained in the locking mode as shown in FIG. 8C.

Figure 8d shows the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to another embodiment of the present invention.

Referring to FIG. 8D, in the situation in which the spare tire is mounted, the locking lever 100 is kept in the locking mode and is in an inclined state. In a situation where the wire 150 is broken, the tire bracket 180, the housing 110, and the like including the spare tire S may fall due to the load of the spare tire. Since the locking lever 100 has already been switched to the locking mode and retained, even if the tire bracket 180 and the housing 110 on which the spare tire is mounted fall, the ring 105 of the locking lever is connected to the flange of the locking lever holder 200. 220) fall is prevented.

As described above, by the fall prevention device of the spare tire according to another embodiment of the present invention, the locking lever may be switched to the locking mode and maintained from the time when the spare tire is mounted. By being kept in the locking mode, it is possible to reliably perform the fall prevention function of the spare tire in the abrupt wire cutting situation without any additional action or action.

9 is an exploded perspective view of the spare tire fall prevention apparatus according to another embodiment of the present invention.

9, the spare tire drop prevention apparatus according to another embodiment of the present invention includes a locking lever holder 200, a tire bracket 180, a wire guide 130, a housing 110, and a locking lever 100. , The elastic straightening part 120, the rotation shaft pin 165, the fixed shaft 175, the double elastic part 900, and a wire stopper 170 may be included. Device fixing portion 210, locking lever holder 200, tire bracket 180, wire guide 130, housing 110, locking lever 100, elastic correction portion 120, shaft pin 165, Components such as the fixed shaft 175 and the wire stopper 170 have been described in detail in the above-described embodiment and thus will be omitted here.

The double elastic portion 900 may act to each elastic force by varying the radius. For example, when the double elastic part 900 includes two springs having different radii, the locking lever 100 may be switched to the locking mode or the unlocking mode by each spring.

The first elastic part 910 located inside the double elastic part 900 serves to switch the locking lever to the release mode. In other words, when the spare tire is mounted on the tire bracket, the locking lever 100 may be raised on the vertical line by the first elastic portion 910 to be in the release mode.

The second elastic part 920 located outside the double elastic part 900 may serve to switch the locking lever 100 to the locking mode. The second elastic part 920 may transfer the elastic force to the locking lever in the process of finally winding the wire to complete the mounting of the spare tire to rotate the locking lever about the rotation axis to switch to the locking mode.

The lengths of the first elastic portion 910 and the second elastic portion 920 may vary, and the elastic modulus of each elastic portion may be adjusted differently. For example, the first elastic portion 910 is longer than the second elastic portion 920 in the state that no external force is applied, so that the compressive force is applied to the first elastic portion 910 first, and then the second elastic portion later. Compression force may be applied to 920. In addition, each of the elastic parts 910 and 920 may include washers 915 and 925 corresponding to the diameter of each elastic part in order to uniformly transmit the elastic force to the locking lever 100. Accordingly, the locking force of the first washer 915 and the second elastic portion 920 to transmit the elastic force of the first elastic portion 910 to the locking lever 100 on the first elastic portion 910. ) May include a second washer 925. The second washer 925 may include a hollow hole larger than the diameter of the first washer 915.

10a to 10c show each step of the operation of the spare tire fall prevention apparatus according to another embodiment of the present invention.

Referring to FIG. 10A, a state of the locking lever before mounting the spare tire S on the tire bracket 180 is illustrated. Before the spare tire (S) is mounted, since no external force acts on the dual elastic portion 900 including the housing 110, the elastic correction portion 120 is locked to the locking lever 100 in a stabilized state in which the elastic force is not applied. Can be rotated. Therefore, the locking lever may exist in a state in which the locking lever 100 is inclined by the elastic straightening part 120.

Referring to FIG. 10B, the spare tire S is shown immediately after being mounted to the tire bracket 180. The attached form of the spare tire S has been omitted in order to show the operation of the spare tire fall prevention device in detail. The spare tire load in the vertical direction is applied by the mounting of the spare tire. The first elastic portion 910 positioned at the center of the wire 150 based on the vertical load may support the load of the spare tire. Therefore, the first elastic portion 910 may transmit the compressive force to the locking lever 100 by the applied load. When there is a washer 915 between the first elastic portion 910 and the locking lever 100, the compressive force is transmitted to the locking lever 100 through the washer 915. The locking lever 100 may rotate about the rotation axis by the transmitted compression force, and the locking lever 100 may be vertically erected by the rotation of the locking lever. Therefore, the locking lever 100 may be switched to the release mode.

Referring to FIG. 10C, the spare tire is wound around the wire 150 in a state in which the spare tire is mounted on the tire bracket 180, and then the spare tire is mounted. In the case of winding the wire 150 through the power transmission device, the upper portion of the housing 110 is inserted into the locking lever holder 200. When the rise of the housing 110 is stopped and the wire 150 is continuously wound, the length of the double elastic portion 900 may be reduced while being compressed.

When the second elastic part 920 is compressed among the double elastic parts 900, an elastic force may be transmitted to the edge portion of the locking lever 100. The first elastic portion 910 may transmit an elastic force for switching the locking lever 100 to the release mode, and the second elastic portion 920 may transmit an elastic force for switching the locking lever 100 to the locking mode. Therefore, when the torque transmitted by the elastic force of the second elastic portion 920 is larger than the torque transmitted by the elastic force of the first elastic portion 910, the locking lever 100 may be switched to the locking mode. Can be. In one embodiment of the present invention, while the double elastic portion 900 is compressed, the locking lever 100 may be switched to the locking mode by the second elastic portion 920. For example, the torque transmitted to the locking lever 100 by making the elastic modulus of the second elastic part 920 larger than the elastic modulus of the first elastic part or by adjusting the distance between the first or second elastic part with the rotating shaft. You can set the locking lever to the locking mode by adjusting.

In this way, after the winding of the wire is finished, the locking lever is kept in the locking mode, and the mounting of the spare tire can be completed.

Figure 10d shows the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to another embodiment of the present invention.

Referring to FIG. 10D, the locking lever 100 is already maintained in the locking mode while the spare tire is completely mounted. When the spare tire falls due to breakage of the wire or the like, the locking lever 100 held in the locking mode also falls. Since the locking lever 100 has a ring 105 formed at an end thereof, the ring 105 may be caught by the flange 220 of the locking lever holder 200 to prevent the spare tire from being separated.

As described above, the spare tire drop prevention apparatus according to another embodiment of the present invention can safely handle the emergency situation such as wire breakage by maintaining the locking lever 100 in the locking mode by the double elastic portion 900. In addition, it is possible to reliably perform the fall prevention function of the spare tire without additional operation or action in a sudden wire cutting situation by holding and locking the locking lever 100 in the locking mode by a mechanical design of double elasticity.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations, modifications, and modifications without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other embodiments may be embodied. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is an exploded perspective view of the spare tire fall prevention apparatus according to an embodiment of the present invention.

Figure 2 is a perspective view of the spare tire fall prevention apparatus according to an embodiment of the present invention.

3 is a view showing a torsion spring as an example of the elastic straightening device in the spare tire drop prevention apparatus according to an embodiment of the present invention.

4A and 4B are views illustrating the operation of the locking mode of the spare tire drop prevention apparatus according to an embodiment of the present invention.

Figure 4c is a view showing a release mode of the spare tire fall prevention apparatus according to an embodiment of the present invention.

5A to 5C are diagrams illustrating the operation of the spare tire drop prevention apparatus according to an embodiment of the present invention in each step.

Figure 5d is a view showing the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to an embodiment of the present invention.

6A and 6B illustrate a process of switching to the locking mode in the spare tire drop preventing apparatus according to an embodiment of the present invention in detail.

7 is an exploded perspective view of the spare tire fall prevention apparatus according to another embodiment of the present invention.

8a to 8c is a view showing the operation of the spare tire fall prevention device according to another embodiment of the present invention in each step.

8D is a view showing the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to another embodiment of the present invention.

9 is an exploded perspective view of the spare tire fall prevention apparatus according to another embodiment of the present invention.

10a to 10c is a view showing the operation of each spare tire fall prevention device according to another embodiment of the present invention in each step.

10d is a view showing the operation of the drop prevention device by the break of the wire in the spare tire fall prevention device according to another embodiment of the present invention.

* Description of the main parts of the drawings *

100: locking lever 105: hook

109: cam surface 110: housing

113: upper body 115: lower body

120: elastic straightening unit 130: wire guide

140: washer 150: wire

160: elastic member 165: rotary shaft pin

170: wire stopper 175: fixed shaft

180: tire bracket 200: locking lever holder

220: flange 225: flange hole

210: device fixing portion 400: power transmission device

300, 700: locking portion 310: fixed pin

320: moving pin 330: lock spring

710: lock button 720: guide pipe

730: button spring

900: double elastic portion 910: first elastic portion

920: the second elastic portion

Claims (11)

In the device for preventing the fall of the spare tire mounted on the tire bracket, One end is a ring shape, one surface of the lever body is formed with a cam surface, the locking lever (rotating lever) capable of rotating around the axis of rotation of the lower lever; A housing configured to form the rotation shaft therein and provide a space in which the locking lever can rotate along the rotation shaft, and support the tire bracket; A locking lever holder providing a space for accommodating the housing; And And a locking part including a moving pin contacting the cam surface of the locking lever in accordance with the rising of the housing while the locking lever is standing vertically, and rotating the locking lever to tilt the locking lever. The housing includes a rotating shaft pin is fitted horizontally to the housing body and coupled through the bottom of the lever of the locking lever, The rotation shaft pin provides the rotation shaft to which the locking lever can rotate, The locking unit maintains the locking lever in an inclined state by the moving pin when the spare tire is completely installed, and one end of the locking lever is locked due to the locking lever in the inclined state when the spare tire is dropped. Spare tire fall prevention device to catch on lever holder. The method of claim 1, The locking unit further includes a lock spring for connecting the movable pin to the upper portion of the housing, The moving pin is prevented from rising when the housing is raised, and in contact with the cam surface of the locking lever rising in accordance with the rise of the housing, the spare tire fall prevention device for rotating the locking lever about the rotation axis. In the device for preventing the fall of the spare tire mounted on the tire bracket, One end is a ring shape, one surface of the lever body is formed with a cam surface, the locking lever (rotating lever) capable of rotating around the axis of rotation of the lower lever; A housing configured to form the rotation shaft therein and provide a space in which the locking lever can rotate along the rotation shaft, and support the tire bracket; A locking lever holder providing a space for accommodating the housing; And It includes a locking portion having a lock button to rotate the locking lever in contact with the cam surface of the locking lever in accordance with the rising of the housing in the vertically up state of the locking lever, the locking button, The housing includes a rotating shaft pin is fitted horizontally to the housing body and coupled through the bottom of the lever of the locking lever, The rotation shaft pin provides the rotation shaft to which the locking lever can rotate, The locking unit maintains the locking lever in an inclined state by the lock button when the spare tire is completely installed, and one end of the locking lever is locked due to the locking lever in an inclined state when the spare tire is dropped. To the lever holder, The locking portion further comprises a guide pipe for guiding the movement of the wire, The upper portion of the lock button is coupled to the upper body of the housing, the lower portion of the lock button is in contact with the cam surface of the locking lever in accordance with the rise of the housing, the spare tire fall prevention device to rotate and tilt the locking lever . The method of claim 1, A wire stopper positioned below the housing and integrally connected to the wire; And Located between the wire stopper and the housing is compressed by receiving a compressive force by the wire stopper by the winding of the wire, further comprising an elastic member for transmitting the compressive force to the locking lever in the housing, spare tire drop Prevention device. In the device for preventing the fall of the spare tire mounted on the tire bracket, One end is formed in a ring shape and the other end is a locking lever (locking lever) formed to be able to rotate about the rotation axis; A housing configured to form the rotation shaft therein and provide a space in which the locking lever can rotate along the rotation shaft, and support the tire bracket; A locking lever holder providing a space for accommodating the housing; And A double elastic part formed under the housing and configured to rotate and tilt the locking lever while the locking lever is vertically placed; The housing includes a rotating shaft pin is fitted horizontally to the housing body and coupled through the bottom of the lever of the locking lever, The rotation shaft pin provides the rotation shaft to which the locking lever can rotate, The double elastic part includes a first elastic part located close to the center of the wire vertically penetrating the center and a second elastic part located outside the first elastic part, The first elastic portion is in contact with the lower end of the locking lever when the initial mounting of the spare tire to rotate the locking lever to stand vertically, The second elastic portion rotates the locking lever by tilting the locking lever by providing torque to the locking lever that is compressed as the wire is wound, The double elastic part maintains the locking lever in an inclined state when the spare tire is installed, and one end of the locking lever is inclined to the locking lever holder due to the inclined locking lever when the spare tire is dropped. Spare tire fall prevention device to catch. delete The method of claim 5, wherein the double elastic portion A first washer for transmitting an elastic force of the first elastic portion to the locking lever above the first elastic portion; And And a second washer for transmitting an elastic force of the second elastic portion to the locking lever on the second elastic portion, The second washer includes a hollow hole larger than the diameter of the first washer, spare tire fall prevention device. The method according to claim 1 or 5, Further comprising a wire moving vertically through the center of the housing and the locking lever, The locking lever holder has a flange hole through which the housing can go in and out, and a flange formed around the flange hole so that the hook of the locking lever can be caught when the housing and the locking lever fall due to the breakage of the wire. Spare tire fall prevention device having a. The method of claim 8, And a device fixing portion for attaching the locking lever holder to the vehicle. The method according to any one of claims 1, 3 and 5, And the tire bracket is fitted to the housing body above the housing and supports the spare tire. The method according to any one of claims 1, 3 and 5, And a resilient straightening portion for providing an elastic force for maintaining the locking lever in an inclined state before the spare tire is mounted.

Images